本帖最后由 1529689548 于 2020-12-29 18:09 編輯
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit key1=P3^4;
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7c,0x07,0x7f,0x67};
uchar code table2[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfc,0x87,0xff,0xe7};
void delayms(uint);
void display(uchar,uchar,uchar,uchar);
void keyscan();
uchar num1,num2,bai,shi,ge;
uint num;
void main()
{
TMOD=0x11;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
EA=1;
ET0=1;
ET1=0;
while(1)
{
keyscan();
bai=num/100;
shi=(num-100*bai)/10;
ge=num-100*bai-shi*10;
display(bai,shi,ge);
}
}
void display(uchar bai,uchar shi,uchar ge)
{
P1=0xfe;
P2=table[bai];
delayms(10);
P1=0xff;
P1=0xfd;
P2=table2[shi];
delayms(10);
P1=0xff;
P1=0xfb;
P2=table[ge];
delayms(10);
P1=0xff;
}
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void keyscan()
{
if(key1==0)
{
delayms(10);
if(key1==0)
{
while(!key1)
{
TR1=1;
num=0;
TR1=0;
}
}
}
if(key2==0)
{
delayms(10);
if(key2==0)
{
while(!key2);
TR0=0;
TR1=~TR1;
}
}
if(key3==0)
{
while(!key3);
TR0=0;
TR1=1;
num=999;
TR1=0;
TR0=~TR0;//TR0=1;
}
}
void T0_time()interrupt 1
{TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num2++;
if(num2==2)
{ num2=0;
num1++;
}
if(num1==10)
num1=0;
if(num==0)
num=999;
num--;
}
void T1_time()interrupt 3
{ TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
num2++;
if(num2==2)
{ num2=0;
num1++;
if(num1==10)
num1=0;
num++;
if(num==999);
num=0;
}
}
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